Tadarise pro 40 medicine is used to treat erectile dysfunction in men. The drug contains an element called tadalafil, which works to relax the muscles by increasing blood circulation in the arteries of the penis. This drug should only be taken by men over 18 years of age. This can be used 1 hour before sexual activity. The effect of this drug lasts for about 36 hours. It is advisable to take this medicine only once a day.